<template>
  <el-container class="home_container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img class="img_css" src="../assets/版本管理系统.png">
        <span>电商管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse">
              |||
          </div>
        <!-- 侧边栏菜单区 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition="false"
        router :default-active="activePath">
          <!--这是一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <!-- i是图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- span是文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <template slot="title">
                <!-- i是图标 -->
                <i class="el-icon-menu"></i>
                <!-- span是文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--右侧区域主体  -->
      <el-main>
          <!-- 路由占位符 -->
          <router-view ></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        return{
            // 左侧菜单数据
            menulist: [],
            iconsObj: {
                '125': 'iconfont icon-yonghuguanli',
                '103': 'iconfont icon-quanxianguanli',
                '101': 'iconfont icon-shangpinguanli',
                '102': 'iconfont icon-dingdanguanli',
                '145': 'iconfont icon-shujutongji'
            },
            // 是否折叠
            isCollapse:false,
            // 被激活的连接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有的菜单
     async getMenuList(){
        const {data:res} = await this.$http.get('menus')
        if(res.meta.status !==200)return this.$message.error(res.meta.msg)
        this.menulist=res.data
        console.log(res)
    },
    // 点击按钮，切换菜单的折叠与展开
       toggleCollapse(){
           this.isCollapse=!this.isCollapse
       },
    //    保持连接的激活状态
      saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
    }
  },
};
</script>

<style lang="less" scoped>
.home_container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #ccccff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 10px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
      border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.img_css {
  top: 10px;
  width: 50px;
  height: 50px;
  padding-left: 8px;
  padding-top: 5px;
}
.iconfont{
    margin-right: 12px;
}
.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>